Metamorphosis Fanatic + Wispweaver Angel + Yahenni, Undying Partisan

Metamorphosis Fanatic

Wispweaver Angel

Yahenni, Undying Partisan

How it works

1. Cast Wispweaver Angel by paying its mana cost.
2. When Wispweaver Angel enters the battlefield, it triggers, targeting Metamorphosis Fanatic.
3. Holding priority, activate Yahenni by sacrificing Wispweaver Angel.
4. Resolve the Wispweaver Angel ability, blinking Metamorphosis Fanatic.
5. When Metamorphosis Fanatic enters the battlefield, it triggers, returning Wispweaver Angel from your graveyard to the battlefield.
6. Repeat from step 2.